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Java Developer - Spring Poland Jobs (On-site work)

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Senior Java Developer
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Join our Warsaw team as a Senior Java Developer. You will design and evolve the administrative backbone for real-time sports data using Java, PHP, and AWS. We value TDD, pair programming, and clean architecture principles. Enjoy a collaborative environment with mentoring and global impact.
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Poland , Warsaw
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Not provided
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Sportradar
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Until further notice
Intern Java Backend Developer
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Join our team in Warsaw as a Java Backend Developer Intern. Gain hands-on experience developing RESTful APIs with Java and Spring Boot for the eMobility sector. You'll work on real EV charging projects using SQL databases and Agile/SCRUM methodologies. This internship offers expert mentorship and...
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Poland , Warszawa
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Not provided
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Circle K
Expiration Date
Until further notice
A Java Developer specializing in the Spring Framework is a highly sought-after professional responsible for building robust, scalable, and efficient server-side applications that power modern businesses. These developers are the backbone of enterprise software, creating everything from high-volume financial trading platforms to dynamic e-commerce systems and cloud-native microservices. The demand for skilled individuals in this field continues to grow, making it a premier area for technology jobs globally. Professionals in this role translate complex business requirements into technical solutions, ensuring performance, security, and maintainability. Typically, a Java Spring Developer's core responsibility is the end-to-end development of applications using the Java programming language and the comprehensive Spring ecosystem, most notably Spring Boot for streamlined project creation. Their daily tasks involve designing and developing RESTful APIs and web services that serve as the communication layer for front-end clients and other systems. They implement business logic, integrate with databases using technologies like JPA and Hibernate, and ensure data persistence and integrity. A significant part of their role also includes writing clean, testable code and creating unit and integration tests to guarantee software reliability. Furthermore, they often engage in system analysis, architectural planning, and the adoption of design patterns to solve common problems elegantly. The skill set for these jobs is both deep and broad. A strong foundation in core Java (versions 8 and above) is essential, with expertise in object-oriented principles, data structures, and algorithms. Proficiency in the Spring Framework—including Spring MVC, Spring Boot, Spring Security, and Spring Data—is the defining competency. Developers must be adept at building and consuming web services, understanding synchronous and asynchronous communication patterns. Knowledge of relational databases (RDBMS) and SQL is standard, often complemented by experience with NoSQL databases. In modern environments, familiarity with microservices architecture, containerization tools like Docker and Kubernetes, and message brokers such as Kafka is increasingly common. Beyond technical prowess, successful candidates possess strong analytical and problem-solving skills, the ability to work collaboratively in agile teams, and effective communication skills to articulate design ideas and project requirements. Typical requirements for these positions include a bachelor's degree in computer science or a related field (or equivalent experience) and several years of hands-on development experience in Java and Spring. Employers look for a proven track record in developing enterprise-scale applications, a solid understanding of software development life cycles, and the capacity to work under pressure to meet deadlines. For those seeking stable, challenging, and well-compensated technology jobs, a career as a Java Spring Developer offers a clear path to working on impactful projects at the heart of the digital economy.

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